How to use a UIButton as a toggle switch

Question

I am using a UIButton of custom type and what I want is use it like a toggle switch with the change of image. Like when it is clicked if previously it was not in selected mo

Answer 1

For Swift 3

@IBAction func playPause(sender : UIButton){


   if sender.isSelected {
      player.pause()
   }else{
      player.play()
  }
  sender.isSelected = !sender.isSelected
}